Nokia 2220 Servicehandbuch

CCS Technical Documentation

Troubleshooting Instructions

RH-42

Issue 2 09/2003

Nokia Corporation          Confidential

Page 21

Apply 881.49MHz = ch

383 -116dBm, 8kHz

dev, 1 kHz sine to

external RF connector

X900

Connect HS to cellular
tester. Open AF: 1kHz

sine meas SINAD

AF:>12 dB

Check UHF Vc (from

C773) V: 1.8...2.1V

Check RXVHF Vc

(from C740).

V:0.7...1.3

Apply 881.49 MHz

-30dBm sine signal to

external RF connector

X900

Start troubleshooting

Start troubleshooting

AMPS RX chain OK

Y

Y

N

N

Y

N

Y